- Richard Benjamin
- Jonathan Balser
- Frank Langella
- George Prager
- Carrie Snodgress
- Tina Balser
- Lorraine Cullen
- Sylvie Balser
- Frannie Michel
- Liz Balser
- Lee Addoms
- Mrs. Prinz
- Peter Dohanos
- Samuel Keefer
- Katherine Meskill
- Charlotte Rady
- Leonard Elliott
- M. Henri
- Valma
- Margo
- Hilda Haynes
- Lottie
- Donald Symington
- Pediatrician
- Alley Mills
- Women's lib girl
- Alice Cooper
- Alice Cooper
- Michael Bruce
- Michael Bruce
- Glen Buxton
- Glen Buxton
- Ja'net DuBois
- Vera
- Dennis Dunaway
- Dennis Dunaway
- Kurt Garfield
- Carpenter
- William Kiehl
- Elliot Asher
- I.W. Klein
- Stuttering man in group therapy
- Del Lewis
- Pulitzer Prize winning novelist (kleptomaniac)
- George Loros
- Malcolm
- Lester Rawlins
- Dr. Linstrom
- Renee Semes
- College Girl in group therapy session
- Neal Smith
- Neal Smith
- Beverly Ballard
- (uncredited)
- Cash Baxter
- (uncredited)
- Peter Boyle
- Man in Group Therapy Session
- Pierre Epstein
- Divorced Man in Group Therapy Session
- William Hansen
- Worker in the Balser Apartment
- Elaine Kaufman
- Owner of Elaine's Restaurant
- Peggy McKenna
- Woman
- Pamela Saunders
- (uncredited)
- Brian Sturdivant
- Party Guest
- John Tillinger
- (uncredited)
- William Walsh
- Man
- Lydia Wilen
- (uncredited)
